Wrench.



I. H. LYNDS.

WRENCH.

APPUCAHON mm mm: 22.1913.

Patented Nov. 12, 1918.

Elvwentoz JESSE H. LYNIDS, 0F MUSKOGEE. OKLAHOMA.

wnnncn.

Specification of Letters Patent.

Patented Nov. 12, 1918.

Application filed June 27, 1918. Serial No. 842,217.

To all whom it may concern:

Be it known that 1, Jesse H. LYNns,a citizen of the United States. residing at Muskogee, in the county of Muskogee and State of Oklahoma, have invented new and useful Improvements in Wrenches, of which the following is a specification.

This invention relates to wrenches, and the primary object of the same is to provide a device of this class which will grip a. nut or analogous device uniformly on a number of sides without liability of slipping or turning on the nut and marring the corners thereof. A further object of the invention is to provide a wrench which is comparatively small at the working or nut-engaging end'and thereby permitting a practical application and operation of the wrench within a confined space. A still further ob]ect of the invention is to provide a wrench of simple and strong and durable structure and having the adjusting screw located at a considerable distance from the working or nutengaging end and out of the way, yet easily accessible for adjustment.

" With these and other objects and advantages in view, the invention consists in the construction and arrangement of the several parts which will be more fully hereinafter described and claimed.

In the drawing:

Figure 1 represents a perspective view of y a wrench embodying the features of the invention. s

Fig. 2 represents a through the full length of the Wrench.

Fig. 3 regrescnts a section taken in the plane'of the line 3,-3, Fig. 2.

Fig. 4 represents a section plane of the; linea -4, Fig. 2.

taken in the T The numeral 5 designates a flat tubular bodj which forms the handle or grip as we as I t for the w-rench members hereinafter exp ained?" this body being formed of suitable metal having the requisite degree of hardness to resist breaking strain imposed thereon. The rear end 6 of the body is fully opn and the front end has theiopposite sides formed with central ajlined recesses 7 of angular form'to provide a nut :seat, and from the outer terminals of this horizontal section seat the corners of the said front end are.cut

away at rearward angles, as at 8, to remove obstructing projections to the free application and ready manipulation of the working end of the wrench. An angular brace wall member or filling block 9 is inserted and secured in the front end of the body and partially closes the latter end, the opposite ends 9 of the member or block 9 being at right angles to the front and rear edges of the block and terminating short of the side edge walls 10 of the body to provide ways or side spaces 11 for adjustment or movement of portions of the movable jaw. The outer edges of the member or block 9 coincide with portions of the edges of the recesses 7 and by this means a strong backing or resistance wall is provided for engagement by nuts which are operated upon by the wrench.

Near the rear end of the body 5, alining slots 12 are formed in the center of the front and rear sides. and in advance and in rear of these slots a filling block 13 is introduced and secured in fixed position. A portion of the metal cut to form one of the slots 12 is bent inwardly at right angles to form a rear support 1%. The filling block 13 and su port 14 provide holding means for the on s of an axis or spindle 1? of a cylindrical ad justing screw 16 rotatably mounted in. and projecting through the slots 12 for enga ement at opposite sides of the body 51 he axis or spindle 15 is in the form of a headed screw rod having a screw-threaded. terminal 15 which is seated in the filling block 13. The axis or spindle is inserted through the rear support 14 and screw 16 and secured in the said support 14. It will be seen that the front recessed end of the body 5 having the angular member or filling block 9 therein forms a fixed jaw for the wrench, and the adjustments to provide for engagement and operation with different sizesipf nuts are made relatively to the recesses and angular lation, or, the front wall 20 has its apex projected forwardly and the rear wall 19 has its apex projected rearwardly. The walls 19 and 20 are made up of components which intersect at right angles to form central apices, the front wall being the inner margin forwardly converging centrall intersecting bars 20. The side walls 21 o the slot 18 are parallel, and the width of the slot is such as to receive the member or block 9 therein and permit free movement of the front end of the bar inwardly and'outwardly throu h the front end of the body 5 within a pre etermined extent. The side walls 21 are the inner edge terminals of parallel side bars 22 which are disposed and move in the ways or side spaces 11. The angle of the rear wall 19 of slot 18 is precisely the same as the an le of the member or block 9, and ,when t e bar 17 is adjusted to its maximum distance outwardly through the open front end of the body 5, the rear edge of the member or block and the said rear wall 19 of the slot will have an accurate fitting engagement. This arrangement provides for an extended adjustment of the bar 17 within comparatively limited dimensions to increase the size of the nut-engaging opening which is provided between the front wall 20 of the slot 18 and the recesses 7 and the member or block 9. The size of the nut-engaging opening may be reduced to a rather small area through the clearance provided by the angular ends of the member or block 9 for the angular components of the front wall 20 of the slot 18, as shown by dotted lines in Fig. 2. The rear end of thebar 17 is formed with a central bifurcation 23 which extends through the rear end of the bar and has the able flat bar inclosed within the body and side walls 24 thereof formed as racks 25 which are continually engaged by the cylindrical adjusting screw 16. Reverse rotations of the screw 16 cause the front end of the bar 17 to move outwardly and inwardly as may-be desired to modify the dimensions of the nut opening, the front end of the bar forming a sliding or movable jaw relatively to the fixed jaw provided by the recessed front end of the body 5.

It is preferred that all of the parts of the wrench be made of steel, and it will be understood that changes in the dimensions and general proportions of the wrench-may be varied at Wlll.

What I claim is y 1;. In a wrench, a flat tubular body having a nut seat at its front end edge formed by providing angular recesses extending into ipposite sides of the body from the said end i edge, a solid ,wall device extending along a I 'ortion of the recesses and located within the ody, a flat bar inclosed within the body and h'aving the front extremity thereof movable outwardly and inwardly through and beyond the said front end edge of the body, the front extremity of the bar having an inclosed nut slot to cooperate with the adjacent nut seat of the body, and means for operating the bar.

2. In a wrench, a fiat tubular body having a nut seat at its front and edge, a flat bar ,slidably mounted in said body and having an inclosed nut slot in its front end to 006 erate with said seat and disposed outward y beyond the said front end edge of the body, the rear end of the bar having rack means, and a screw projecting through the body and engagin the rack means of the bar to adjust the atter relatively to the said body.

3. A wrench comprising a tubular body having a front end edge which is formed with central angular recesses in opposite sides in alinement with each other, a brace wall member inserted in the front end edge of the'body and having the same an llar form as the recesses, the outer edge 0 the brace wall member being flush with the edges of the, recesses, a slidable bar inclosed within the body and having an inclosed nut slot in its front end to cofiperate with the recesses and brace wall member, the front extremity of the slidable bar being disposed at all times outwardly in advance of the front end edge of the body and movable in the front end of the body, the front extremity of the bar being of angular shape, and means for operating the bar. a

4. A wrench comprising a fiat tubular body open at its front end and having central angular recesses in the frontend edge and also an angular wall member between the opposite sides of the body and flush with the said recesses to form a nut seat, .a slidhaving its front extremit always in advance of and inwardly an outwardly movable with relation to said front end of the body, the front end of the bar having an elongated slot and outer terminal converging walls to cotiperate with the nut seat in the front end edge of the body, and means for operating the bar.

5. A wrench comprising a fiat tubular body having a nut seat at its front end edge of angular form and including an angular wall member fixed between the opposite sides of the body with its front edge flush the wall member, the slot of the bar forming In test-in'lony whereof I have hereunto set opposite side bars which are movable in the my hand in presence of two subscribing spaces between the ends of the wall member Witnesses.

and the adjacent portions of the tubular LBSSE H. LYNDS. 5 body, and means projecting through the Witnesses:

body and cooperating with the bar o adjust A. L. HULL,

the latter within the body. J. W. BARTELL. 

